(*
$Id: presentation_resource_schema.exp,v 1.21 2017/08/11 15:18:45 kevletu Exp $
ISO 10303 TC184/SC4/WG12 N9794

EXPRESS Source:
ISO 10303-46 ed3 Visual presentation - Presentation resource schema

The following permission notice and disclaimer shall be included in all copies of this EXPRESS schema ("the Schema"), 
and derivations of the Schema:

Copyright ISO 2017  All rights reserved
Permission is hereby granted, free of charge in perpetuity, to any person obtaining a copy of the Schema,
to use, copy, modify, merge and distribute free of charge, copies of the Schema for the purposes of developing, 
implementing, installing and using software based on the Schema, and to permit persons to whom the Schema is furnished to do so, 
subject to the following conditions:

THE SCHEMA IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SCHEMA OR THE 
USE OR OTHER DEALINGS IN THE SCHEMA.

In addition, any modified copy of the Schema shall include the following notice:

THIS SCHEMA HAS BEEN MODIFIED FROM THE SCHEMA DEFINED IN
ISO 10303-46 ed3 Visual presentation - Presentation resource schema
AND SHOULD NOT BE INTERPRETED AS COMPLYING WITH THAT STANDARD
*)

SCHEMA presentation_resource_schema '{iso standard 10303 part(46) version(6) object(1) presentation_resource_schema(4)}';

REFERENCE FROM external_reference_schema   -- ISO 10303-41
    (externally_defined_item,
     pre_defined_item);

REFERENCE FROM geometry_schema   -- ISO 10303-42
    (axis2_placement,
     curve,
     geometric_representation_item
     );

REFERENCE FROM measure_schema   -- ISO 10303-41
    (length_measure,
     positive_length_measure,
     positive_ratio_measure,
     ratio_measure);

REFERENCE FROM presentation_definition_schema   -- ISO 10303-46
    (annotation_fill_area,
     symbol_representation);

REFERENCE FROM representation_schema   -- ISO 10303-43
    (item_in_context,
     representation);

REFERENCE FROM support_resource_schema   -- ISO 10303-41
    (identifier,
     label,
     text);


TYPE font_select = SELECT
  (pre_defined_text_font,
   externally_defined_text_font,
   text_font);
END_TYPE;

TYPE staircase_or_linear = ENUMERATION OF
  (staircase,
   linear);
END_TYPE;


ENTITY character_glyph_font_usage;
  character : generic_character_glyph_symbol;
  font      : text_font;
END_ENTITY;

ENTITY character_glyph_symbol
  SUBTYPE OF (generic_character_glyph_symbol);
  character_box  : planar_extent;
  baseline_ratio : ratio_measure;
DERIVE
  box_height : length_measure := character_box.size_in_y;
WHERE
  WR1: {0.0 <= baseline_ratio <= 1.0};
  WR2: item_in_context(character_box,
                       SELF\representation.context_of_items);
  WR3: 'MEASURE_SCHEMA.POSITIVE_LENGTH_MEASURE'
        IN TYPEOF (box_height);
END_ENTITY;

ENTITY character_glyph_symbol_outline
  SUBTYPE OF (character_glyph_symbol);
  outlines : SET [1:?] OF annotation_fill_area;
WHERE
  WR1: outlines <= SELF\representation.items;
END_ENTITY;

ENTITY character_glyph_symbol_stroke
  SUBTYPE OF (character_glyph_symbol);
  strokes : SET [1:?] OF curve;
WHERE
  WR1: strokes <= SELF\representation.items;
END_ENTITY;

ENTITY colour;
END_ENTITY;

ENTITY colour_associated
  SUBTYPE OF (colour);
  name : label;
  variable_to_be_shown : SET [1:?] OF REAL;
  mapping              : colour_association_table;
END_ENTITY;

ENTITY colour_association_table;
  discrete_states_with_colours : LIST [1:?] OF state_variable_with_colour;
  interpolation_type           : staircase_or_linear;
END_ENTITY;

ENTITY colour_rgb
  SUBTYPE OF (colour_specification);
  red   : REAL;
  green : REAL;
  blue  : REAL;
WHERE
  WR1: {0.0 <= red <= 1.0};
  WR2: {0.0 <= green <= 1.0};
  WR3: {0.0 <= blue <= 1.0};
END_ENTITY;

ENTITY colour_specification
  SUBTYPE OF (colour);
  name : label;
END_ENTITY;

ENTITY draughting_pre_defined_colour
  SUBTYPE OF (pre_defined_colour);
WHERE
  WR1: SELF\pre_defined_item.name IN
      ['red',
       'green',
       'blue',
       'yellow',
       'magenta',
       'cyan',
       'black',
       'white'];
END_ENTITY;

ENTITY draughting_pre_defined_text_font
   SUBTYPE of (pre_defined_text_font);
WHERE
   WR1: SELF\pre_defined_item.name[1:8] = 'ISO 3098';
END_ENTITY;

ENTITY externally_defined_text_font
  SUBTYPE OF (externally_defined_item);
END_ENTITY;

ENTITY generic_character_glyph_symbol
  ABSTRACT SUPERTYPE
  SUBTYPE OF (symbol_representation);
END_ENTITY;

ENTITY planar_box
  SUBTYPE OF (planar_extent);
  placement:  axis2_placement;
END_ENTITY;

ENTITY planar_extent
  SUBTYPE OF (geometric_representation_item);
   size_in_x : length_measure;
   size_in_y : length_measure;
END_ENTITY;

ENTITY pre_defined_colour
  SUBTYPE OF (pre_defined_item, colour);
END_ENTITY;

ENTITY pre_defined_text_font
  SUBTYPE OF (pre_defined_item);
END_ENTITY;

ENTITY presentation_scaled_placement
  SUBTYPE OF (geometric_representation_item);
  placement : axis2_placement;
  scaling   : positive_ratio_measure;
END_ENTITY;

ENTITY state_variable_with_colour;
  state_variable    : REAL;
  associated_colour : colour_specification;
END_ENTITY;

ENTITY text_font;
  id          : identifier;
  name        : label;
  description : text;
INVERSE
  glyphs : SET [1:?] OF character_glyph_font_usage FOR font;
END_ENTITY;

ENTITY text_font_family;
  id          : identifier;
  name        : label;
  description : text;
INVERSE
  fonts       : SET [1:?] OF text_font_in_family FOR family;
END_ENTITY;

ENTITY text_font_in_family;
  font   : text_font;
  family : text_font_family;
END_ENTITY;

SUBTYPE_CONSTRAINT prs_geometric_representation_item_subtypes FOR geometric_representation_item;
    (ONEOF (
    curve,
	planar_extent,
	presentation_scaled_placement));
END_SUBTYPE_CONSTRAINT;

END_SCHEMA; -- presentation_resource_schema